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Volumetric Analysis of Irrigant Extrusion in Immature Teeth after Different Final Agitation Techniques

2020; Elsevier BV; Volume: 46; Issue: 5 Linguagem: Inglês

10.1016/j.joen.2020.01.014

1878-3554

Samuel dos Reis, Vitória Maria Sousa Cruz, Marco Antônio Húngaro Duarte, Carlos Eduardo da Silveira Bueno, Rodrigo Ricci Vivan, Rina Andréa Pelegrine, Kely Firmino Bruno, A. Kato,

Dental Trauma and Treatments

Introduction The aim of this study was to evaluate the volume of irrigant extrusion by different final agitation techniques in experimental models of immature teeth. Methods Fifteen single roots of mandibular premolars with a length of 14 mm and an open apex were used to form 6 groups according to the final agitation technique: group 1, positive pressure and no agitation; group 2, ultrasonic agitation with Irrisonic (Helse Dental Technology, Santa Rosa de Viterbo, Brazil); group 3, ultrasonic agitation with Irrisonic Power (Helse Dental Technology); group 4, mechanical agitation with Easy Clean (Easy Dental Equipment, Belo Horizonte, Brazil); group 5, mechanical agitation with XP-endo Finisher (FKG Dentaire, La Chaux-de-Fonds, Switzerland); and group 6, sonic agitation with Eddy (VDW, Munich, Germany). A prototype was made from an Eppendorf plastic tube filled with agar to fix the tooth and to collect the extruded irrigant. Ioditrast 76 (Justesa Imagen Mexicana, Tlalpan, Mexico) contrast solution was used to simulate the irrigant. The volume of irrigant extruded in cubic millimeters was calculated by micro–computed tomographic imaging. Data were analyzed using Kruskal-Wallis and Dunn tests with a significance level of 5%. Results The values for the volume of irrigant extruded were as follows: 0.67 (group 5), 0.76 (group 1), 2.28 (group 2), 3.14 (group 3), 3.15 (group 4), and 17.19 (group 6). There was a statistically significant difference (P < .05) when the values of group 6 were compared with those of the other groups. Conclusions All techniques caused irrigant extrusion. The higher extrusion values occurred when sonic agitation was performed with the Eddy instrument.